Types of Plate Boundaries worksheet - Free Printable

The image you've provided is a table summarizing the three main types of tectonic plate boundaries—Convergent, Divergent, and Transform—along with illustrations showing how the plates move and what geological events can occur at each type. Let's go through each one, explain the movement, and clarify what happens at each boundary.

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1. Convergent Boundary

- How the plates move: Two tectonic plates move toward each other.
- In the diagram, one plate (oceanic crust) is being forced beneath another (continental crust) in a process called subduction.
- This typically occurs when an oceanic plate collides with a continental plate (or two oceanic plates).
- What can happen:
1. Earthquakes – Due to the intense pressure and friction as plates collide.
2. Mountain Building – When two continental plates collide (e.g., Indian Plate and Eurasian Plate forming the Himalayas), they crumple and uplift to form mountains.
3. Volcanoes erupt – As the oceanic plate subducts, it melts in the mantle, creating magma that rises and forms volcanoes (e.g., volcanic arcs like the Andes).

> ✔ Example: The Pacific Ring of Fire has many convergent boundaries with active volcanism and earthquakes.

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2. Divergent Boundary

- How the plates move: Two tectonic plates move away from each other.
- The diagram shows a rift valley forming as magma rises from the mantle to fill the gap.
- This often occurs at mid-ocean ridges or on continents (like the East African Rift).
- What can happen:
1. Earthquakes – Caused by the fracturing of rock as plates pull apart.
2. Sea floor spreading – New oceanic crust forms as magma solidifies between the separating plates (e.g., Mid-Atlantic Ridge).
3. Volcanoes erupt – Magma rises to the surface, forming underwater volcanoes or fissure eruptions.

> ✔ Example: The Mid-Atlantic Ridge is a classic divergent boundary where new ocean floor is created.

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3. Transform Boundary

- How the plates move: Two plates slide past each other horizontally.
- The diagram shows lateral movement along a fault line (like the San Andreas Fault).
- No new crust is created or destroyed here.
- What can happen:
1. Earthquakes – These are common due to the sudden release of built-up stress as plates grind against each other.
- Unlike convergent or divergent boundaries, there is no volcanism because no subduction or upwelling occurs.

> ✔ Example: The San Andreas Fault in California is a transform boundary between the Pacific and North American plates.

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Summary Table (Completed):

| Boundary Types | How the Plates Move | What Can Happen |
|------------------------|------------------------------------------|--------------------------------------------------|
| 1. Convergent | Plates move toward each other | Earthquakes, Mountain Building, Volcanoes erupt |
| 2. Divergent | Plates move away from each other | Earthquakes, Sea floor spreading, Volcanoes erupt |
| 3. Transform | Plates slide past each other | Earthquakes |

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Key Takeaways:

- Convergent → Collision → Mountains, volcanoes, quakes.
- Divergent → Separation → New crust, sea floor spreading, quakes, volcanoes.
- Transform → Sliding → Only earthquakes (no volcanism).

This table is a great tool for understanding plate tectonics and predicting geological hazards in different regions!

Let me know if you'd like to add more examples or real-world locations!